Hollow home of hormones.
D002766:Cholecystokinin / Q000378:metabolism; D005768:Gastrointestinal Hormones / Q000096:biosynthesis*; D006728:Hormones / Q000096:biosynthesis*; D007413:Intestinal Mucosa / Q000378:metabolism*; D012633:Secretin / Q000378:metabolism
D005768:Gastrointestinal Hormones; D006728:Hormones; D012633:Secretin; D002766:Cholecystokinin